Answer:
30% off
Explanation:
84 is 70% of 120 and 100-70=30
Answer: The backpack's percent of discount is 30%
$180 is the 100%
$84 is the X%
Therefore:
X% = (84*100%)/120 = 70%
But 70% is the final price.
The percent of discount is:
100% - 70% = 30%
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